Kumamoto - Wales flyhalf Dan Biggar is "symptom-free" after sustaining a head knock in the victory over Fiji and says he feels fine, coach Warren Gatland said on Friday.
Biggar suffered the injury in an accidental clash with Wales teammate Josh Adams and was replaced by Rhys Patchell for the remainder of the game, which the Welsh went on to win 29-17 to secure their place atop Pool D and a likely quarter-final against France.
"Dan was symptom-free the next day (Thursday), which was great," said Gatland, making 13 changes to the team to face Uruguay in Kumamoto on Sunday.
"He's being closely monitored by the medical team. The medics have spoken to a number of people, doing consultations.
"He said he feels really good in himself. He is just going through the HIA protocols at the moment."
Playmaker Biggar was concussed in Wales' previous game against Australia, but recovered during the 10-day break before Fiji and was cleared to play again.
Centre Jonathan Davies also suffered a blow to his knee, but Gatland was confident he would be fit for the potential last-eight clash against Les Bleus in Oita on October 20.
"He's being monitored as well. The knee was pretty good the next day," Gatland said.
"It had a bit of swelling and he's been icing it regularly. He gets a little bit more time, and hopefully that keeps improving over the next few days."
Gatland added that winger George North had been rested as he recovers from a sore ankle he had taken into the Fiji game.
15 Leigh Halfpenny, 14 Josh Adams, 13 Owen Watkin, 12 Hadleigh Parkes, 11 Hallam Amos, 10 Rhys Patchell, 9 Aled Davies, 8 Aaron Wainwright, 7 Justin Tipuric (captain), 6 Aaron Shingler, 5 Adam Beard, 4 Bradley Davies, 3 Dillon Lewis, 2 Ryan Elias, 1 Nicky Smith
Substitutes: 16 Elliot Dee, 17 Rhys Carre, 18 Wyn Jones, 19 Jake Ball, 20 Ross Moriarty, 21 James Davies, 22 Tomos Williams, 23 Gareth Davies